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Title: LARP%20Accelerator%20Systems%20Synthesis


1
LARP Accelerator Systems Synthesis
US LHC Accelerator Research Program
bnl - fnal- lbnl - slac
  • Vladimir Shiltsev

2
Content
  • Whats new after October05 Collaboration Meeting
  • LARP Org Chart changes, communication, DocDB, Web
  • FY06 Budget spending to date
  • DoE Review Nov05 RC review Lumi Review
  • LARP Collaboration Meeting Apr06 _at_ LBL
  • Accelerator Systems Progress Highlights
  • New proposals
  • hard deliverables vs new proposals
  • Gang of 51
  • Stream of consideration approval process

3
Accelerator Systems Org Chart
Recent Changes Wolfram Fischer (BNL) to lead AP
4
Communication/Coordination
  • Communication within LARP
  • VideoConf of all AS L2sSteve once/mos
  • One-on-one meetings (site visits, reviews, etc)
    once/qrtr
  • Collaboration meetings twice/year
  • Communication with CERN
  • First long-termers (P.Limon et al)
  • Visits (HC, BC, Instr, etc) gt1/mos
  • Workshops (e.g. TAN) and reviews (e.g. RC)
    once/qrtr
  • LARP Collab Meetings twice/yr
  • US-CERN meetings once/yr
  • LARP Doc DB is functioning
  • 280 docs uploaded from Oct05-Apr06

5
https//larpdocs.fnal.gov/LARP-private/DocDB/
  • Introduced in Oct05 Collab Mtg (FNAL)
  • Main tool at the Apr06 Collab Mtg (LBL)
  • Management of
  • Agenda
  • Anyone can/may do it, but should be convener or
    session chair
  • No need to keep agenda externally
  • Talks/documents
  • The speaker is responsible for maintaining the
    integrity of his/her document

6
Web pages
  • USLARP.org web site
  • Uses Plone
  • A widespread wiki implementation
  • Elliott McCrory is working on making this site
    useful
  • Jump point to other web resources
  • Anyone can modify the content/layout
  • You have your own username/password
  • There are lots of LARP web sites
  • LBNL
  • BNL
  • Fermilab
  • AD TD
  • SLAC
  • ?

7
FY06 Accelerator Systems Budget
Pete got extra 150k to cover past investments
BNL BC funds redistributed to FNAL and LBL ? -60k
RC hardware start delayed ? -350k
Nick got extra 50k for PhII irradition
extra 30k To build BB-Wires
8
Accel.Syst. Spendings
1.2M/3.6M33 thru ½ year Mar.31, 2006
9
Topics
  • Make sure that we achieve all milestones
  • And spend approx as planned
  • Reviews
  • Be prepared and pass numerous reviews (small and
    big one)
  • Next year planning/budget
  • Have clear understanding of what will we do next
    year
  • New initiatives
  • Should always have a healthy pressure of new
    proposals
  • Now anticipate some to be freed after
    diagnostics development and fabrication finished
    in 2007

10
DoE Review of LARP November 2005
  • The review committee was very pleased with the
    presentations on beam instrumentation and
    accelerator physics. In addition, they found the
    idea of participation in the development of a
    remote control room a very interesting
    possibility for enhancing interactions with CERN
    from afar via the Fermilab project LHC_at_FNAL.
  • Plans for commissioning of LHC hardware are
    already being implemented, with the first U.S.
    staff member (Peter Limon) already stationed at
    CERN. It was reported by management that U.S.
    laboratories will provide staffing for this
    effort, and, in fact, FNAL has committed seven
    persons to this task. LARP and CERN will cover
    costs of travel and additional living expenses in
    the Geneva area.
  • Finally, the committee again emphasized its
    displeasure with the lack of formality in
    dealings of LARP, and strongly recommended a more
    effective bookkeeping system for managing
    expenses and progress on all active tasks, and a
    person who would be responsible for implementing
    such a system.

11
Task Sheets
  • Task Sheets are written by L2s and approved by
    L2s and L1s and L0
  • Most useful documents
  • Objective, milestones, funds and personnel
    resources all can be found on one page
  • Semi-annual reports are lined up along these Task
    Sheets

12
Reporting
13
Fixing lack of formality RLS
14
Other Directive Documents
15
Another Concern Sign-Offs
  • Alex Ratti developed an acceptable for both US
    and CERN 6-item SignOff Documentatation scheme
  • Now for instrumentation only
  • Its model for other tasks (Collimators, Wires,
    etc)

16
Internal Reviews
  • Rotating Collimator-1 CDR Review
  • December 2005, chaired by W.Turner
  • OK, advised to design jaw support before cut
    iron
  • Luminsity Monitor Final Design Review
  • April 2006, chaired by T.Shea
  • All positive, technical risks low to medium
  • Schottky Monitor Final Design Review
  • June 2006, at CERN
  • Tune FB Final Design Review
  • Before FY07, m.p. at BNL

17
TCFB on RHIC ramp
Good publicity is part of LARP success measure
we need to get more articles like that!
P.Cameron
18
Luminosity Monitor
  • The only real-time bunch-by-bunch luminosity
    measurement in the LHC
  • 25 ns bunch spacing, 1 resolution
  • RD phase has been completed
  • Demonstrated 40 MHz performance using ALS X-ray
    beamline
  • Technical Challenges
  • Extremely high radiation levels
  • up to 250 Grad
  • Signal processing to avoid pileup
  • 25 ns bunch spacing
  • Project Milestones
  • Final Design Review (Apr 06)
  • System test at RHIC (Summer 06)
  • Four systems complete (Winter 06-07)
  • Installation and integration support (07)

DAQ TAN
FE electronics
19
LHC 4.8 GHz Schottky Design
R.Pasquinelli A.Jansson
  • Remarkable Progress
  • Final drawings ready for CERN inspection
  • Final Design Review 06/19/06 at CERN
  • Will be the first LARP thing delivered to CERN
  • Plan to be one of anchors for BC
  • LHC_at_FNAL for monitoring

20
  • Commissioning of US Deliverables and General HC
  • Since Nov05 DOE Review
  • 1st USLHC String transported to tunnel
  • LARP Oversight and technology transfer for USLHC
    interconnects
  • Transportation and Installation of 2nd IR
    quad/DFBX/D1 on going.
  • LARP commissioners receive Project Associate
    status, join a CERN group (AT/ACR or AT/MEL) for
    nominally one year and contribute to the groups
    general HC responsibilities as well as US
    deliverables.
  • One commissioner stationed at CERN now. 3-4
    additional to follow in the fall of 2006. Peak
    participation in Summer07

21
LHC Beam Commissioning
  • Accelerator Systems commissioners will
  • Organized on task groups of 3-4 people
  • (e.g. instrument operations developercontrolsph
    ysicist)
  • LARP is heading toward having (at least) a double
    presence in the LARP instruments groups
  • Will require coordination between L2s of
    Instrumentation and Commissioning

22
Beam Commissioning Progress
23
EoI Circulated
24
LHC_at_FNAL Start-Up
  • Committees work complete
  • Endorsement received from
  • Fermilab Directorate
  • Affected Fermilab Divisions/Sections (AD, PPD,
    CD, FESS)
  • LARP management
  • CMS management
  • Construction plans in development
  • Funds set aside/awaiting DOE approval
  • Center planned to be open in September 2006

25
PHASE-I Irradiation and Analysis of 2D
Carbon-Carbon at BNL GOALS Determine resilience
of 2D CC against irradiation damage and assess
how the critical property of thermal expansion
changes with irradiation
Material Irradiation Studies
assembly
irradiation
Post-irradiation Analysis
RESULT PHASE-I 2D Carbon-Carbon self anneals
irradiation ramage through thermal cycling in
both strong and weak directions. Therefore, it is
expected to meet the 25 micron condition set as
goal
Phase-II LHC Collimator Material Irradiation
Planned for May 2006
  • Primary Materials Annealed Copper and Glidcop
    (85 Cu 15 Al) done! (May 4, 2006)
  • Other Potential Candidates Super Invar, Gum
    Metal, 3D Carbon-Carbon

26
Rotating Collimator Rescheduled
  • Slip schedule 6 months
  • Single jaw tests, support/stopper design
    write-up by EOFY06
  • RC1 performance report by mid FY07
  • 400k returned to LARP management in FY06
    adjustment
  • Expect slippage of Jan 2008 beam-testable RC2
    delivery consistent with CERNs latest schedule
  • RC task is one of hard deliverable and requires
    closer attention at SLAC and LARP to avoid any
    further slippages

27
Satisfactory Benchmarking (POSINST)
  • Benchmark code against HCX experiment (LBNL)
  • expt. and sim. agree quantitatively on
    characteristics of e oscillations observed in
    magnetic quadrupole flooded with electrons

experiment simulation
28
Wire Compensator
  • RHIC beam-beam experiments in April 2006
  • Motivation Test of wire compensation in
    2007
  • Determine if a single parasitic at top
    energy causes beam losses that need to be
    compensated. Similar experiment done last year at
    injection energy - found strong effects at
    separations 6s.
  • 2 experiments done so far April 5th, April
    12th
  • Beam-beam simulations of 2006 experiments
  • Motivation Tests and improvements of
    codes, predictions of observations in 2006 and of
    wire compensation
  • Four groups
  • FNAL, SLAC LBL University of Kansas

In CY06 construct and install a wire
compensator in RHIC, downstream of Q3 in IR6
29
New Initiatives (Apr06 Coll.Mtg.)
  • Recently initiated (minor) activities
  • Flux jumps effects
  • dB/B measurements
  • Potential new L3 tasks (need feasibility
    studies)
  • AC dipole
  • Crystal collimation
  • Longitudinal Density Monitor
  • e-lenses for Head-on B-B Compensation
  • Crab cavities
  • Considerations on Large Scale Improvements
  • 1.5TeV Injector in LHC tunnel LER-LHC
  • Optical Stochastic Cooling

30
Consideration Process
  • Gang of 51 is formed to consider/propose that
    (L2sVSSP)
  • General requirements
  • Interesting subject, development should push up
    the state of the accelerator physics and
    technology in the US
  • Of interest for LHC
  • Collaboration of gt1 Lab, Universities welcome
  • Not at expense of current unfinished tasks
  • Right time and budget scale
  • Considerations finished and decision taken
  • Either before start of FY07 (better _at_ LARP
    Exec.Comm. June 5)
  • After presentation of feasibility study results
    at the Collab Mtg
  • Then, L3 task formed, one of L2s picks it up ?
    plan, RLS, , etc

31
Common questions to answer
  • Title/subject
  • Leader and participants
  • Objectives
  • Deliverables
  • Time scale/schedule
  • Resources needed
  • Addl man-power (and type eng, phys, techs)
  • Travel
  • Labor
  • MS and Equipment

32
Flux Jumps
An accelerator magnet would need to demonstrate
no or sufficiently small fluctuations How
small? preliminary estimates show that 1 unit
of d(b3) will result in 2 units of Q jumps if
residual dispersion controlled to better than 1
cm at I tune jumps and nonlinear effects
need to be studied (AccelPhys)
33

dB/B Fluctuations
LHC tolerance dB/B3e-10
  • LHC screen light and feels 20 K He flow
    turbulence
  • B-flux is constant at 3kHz
  • dB/B dR/R ? need
  • dR lt 1A to blow horizontal emittance
  • First attempts at CERN (2006)
  • 1e-8 noise in quad/no screen
  • 1e-7 with air flow

34
dB/B Plan of Action
  • Perform dB/B measurements at CERN inside
  • Dipole (cold, high current)
  • Quadrupole (same)
  • Measure vibrations of the screen and LB
    quadrupole
  • Will take about 1 year
  • Cost
  • 2-3 more trips to CERN 6k
  • Low-noise pre-amp 5k
  • Goal conclude on dEmm/dt and need of FB
  • Consider use of Tune FB BBQ and kicker - ?

35
AC dipole
  • Recent good results from the Tevatron
  • Formal proposal for LHC at Collab meeting (Apr
    06)
  • Collaboration formed including Fermilab
    (A.Jansson, M.Syphers), UT Austin (R.Miyamoto,
    S.Kopp), BNL (M. Bai, R. Calaga) and CERN
    (H.Schmickler, J.Serrano)

First AC dipole data in the Tevatron
36
AC dipole collaboration
  • Objective
  • Investigate the conceptual design of ac dipole
    for LHC
  • System design (Magnet, power system, tuning
    range)
  • test system
  • the principles either at Tevatron or RHIC
  • Physics motivations and relevant beam experiments
    at RHIC and Tevatron
  • Financing
  • LARP RD
  • CERN Final systems, funding available earliest
    at 2008
  • NSF through university program
  • Deliverables
  • conceptual design report
  • Test system(s)
  • Relevant beam studies at Tevatron and RHIC
  • Detailed feasibility study plan by June 12 (DoE
    R)

37
Longitudinal Density Monitor (DeSantis, Byrd,
Zolotorev)
  • Fresh Idea Couple SyncLite to optical fiber,
    deliver signal upstairs and process it there with
    electro-optical modulator
  • 50 ps slices, 10 s integration, resolves 0.5M p
    (!)
  • To see 1e-5 tails of main bunches and ghost
    bunches
  • Presented at the LARP Coll.Mtg.
  • CERN interest is limited as they already have
    abort gap monitors (enough for start-up)
  • LDM can be a very useful tool for high luminosity
    operation
  • Under consideration for LARP

38
Head-on beam-beam compensation
  • If beam sizes and shapes are matched (ep)
  • for LHC N_p1.1e11, N_ip4, for 10kV electrons
    (beta0.2) one needs N_e4.4e11 or J_e1.2 A in
    L3 m long e-beam
  • approx Gaussian e-current distribution with rms
    0.3-0.5 mm
  • or donut shape?

39
Challenges of Head-On Compensation
  • Total current is not a challenge
  • Optimum beam profile (vs bunchlength/beta, Qx,y)
  • Compression to 0.3-0.5 mm is doable, though not
    easy
  • Keeping beam straight within 0.03-0.05 mm
  • Beam-beam centering within 0.03-0.05 mm
  • Will bending sections do harm?

40
e-Lens configurations
41
Head-On BBC Action Path
  • Form an LHC eCompensation Task Force with a
    charge to perform feasibility study in 1 year
  • FNAL, BNL, SLAC, LBL, UKansas
  • Goal is to explore parameter space and
    effectiveness of head-on BBC in LHC and RHIC
  • Cost buried in Accel Physics Beam-Beam
    task
  • In case of positive outcome, next steps may
    include
  • Design of the TEL for RHIC 2007
    200k SWF
  • Construction of TEL for RHIC
    2008-2009 1300k MS
  • Demonstrate head-on compensation
    2009-2010 200k SWF
  • Build TELs for LHC 2011-2012 1100k MS
  • Install TELs in LHC and commission
    2012-2014 200k SWF
  • Total 3,000k

42
Qs to Answer
  • Will Gaussian or truncated Gaussian e-current
    density distribution work (improve lifetime and
    reduce diffusion rates)?
  • Straightforward tracking with a weak-strong code
  • Is partial compensation helpful?
  • Is there a better distribution?
  • from first principles, theory, analytical
    consideration
  • Effects are beta_TEL/beta/sigma_z or dP/P
  • check in numerical tracking
  • Importance of e-pbar(p) interaction in bending
    sections
  • Which of three configurations is better?
  • Is the choice tune dependent?
  • Lifetime deterioration due to e-p misalignment
  • e-beam straightness tolerances
  • relative e-p displacement, angle
  • Effect of low-frequency variations dJ, dX on beam
    lifetime
  • Ion cleaning efficiency tolerances
  • Cross-interaction with wires in LHC if there is
    any
  • e-beam effect on coherent stability or
    strong-strong beam-beam effects

43
1.5 TeV SuperFerric Injector in LHC tunnel
J.Johnstone T.Sen, H.Piekarz
44
Summary LER-LHC
  • Title LER A 1.5 TeV Injector Accelerator for
    the LHC
  • Leader Participants Henryk Piekarz, Steve
    Hays, Yuenian Huang,
    John Johnstone, Gijs de Rijk, Lucio Rossi,
    Tanaji Sen, Vladimir Shiltsev
  • Objectives Determine feasibility of the LER
    accelerator
  • Deliverables A preliminary design of the LER
    accelerator
  • Time scale/schedule One year
  • Resources needed
  • - Travel (50 K)
  • - Low Field VLHC magnet test at
    1.6 T (50K)

Plan of Action Make preliminary studies,
prepare several presentations and attend LER-LHC
Workshop at CERN (July 5, 2006) see its
outcome and CERN position before committing any
further resources
45
Optical Stochastic Cooling
Damping time, sec
A.Zholents M.Zolotorev
Lead ions
Undulator period-7 m field 10 T, number of
periods 3
Needs for RD
  • Bypass optics
  • Optical amplifier
  • Proof-of-principle with electrons

Amplifier average power (W)
Damping time for protons 5 hours at 1kW
amplifier power
Plan of Action support letter for OSC
demonstration experiment (NSF) wait for
results
46
BackUp Slides
47
B-field is frozen at high frequencies
48
Wire Beam-Beam Compensation Overall Plan
  • FY2006
  • Design and construct a wire compensator
  • Install wire compensator in RHIC in summer 2006,
    downstream
  • of Q3 in IR6
  • Perform theoretical studies to test the
    compensation and robustness
  • FY2007
  • Study the wire compensation in RHIC with 1 proton
    bunch in each beam and nominal conditions at flat
    top and 1 parasitic interaction.
  • Beam studies to test tolerances on beam-wire
    separation compared to beam-beam separation,
    wire current accuracy and
  • current ripple
  • FY2008
  • Decide on scope of work for the LHC wire
    compensation

49
Detail of flex cooling supply tube
Stub-shaft (bearing not shown)
Contiguous with helical tube inside jaw. Formed
after assembly-brazing of jaw and installation of
bearing on stub-shaft Exits through support shaft
per CERN design Material CuNi10Fe1, 10mm O.D.,
8mm I.D.
Relaxed (as shown) coils 4
Relaxed (as shown) O.D. 111mm (4.4in)
full 360 rotation coils 5
full 360 rotation O.D. 91mm (3.6in)
full 360 rotation torque 9.1N-m (81in-lb)
Support shaft
50
1.3 LHC Collimation RD
  • L2 Leader Tom Markiewicz (SLAC)
  • FY06 budget 850 k
  • Goals
  • The LHC cleaning system must have exceptional
    efficiency to meet its design parameters,
    significantly beyond the state-of-the-art that is
    achieved in existing colliders. It is crucial for
    the success of the LHC that different paths are
    explored in order to optimize the design,
    hardware and operational procedures for the LHC
    collimation system. In view of the exceptional
    difficulty for the LHC it is essential to pursue
    parallel RD studies in- and outside of CERN. The
    phased approach for the LHC collimation system
    will allow to test various proposals and to
    implement the best solutions in an already
    defined upgrade path to nominal performance. The
    LHC Collimator RD will complement the work at
    CERN and will be performed in close
  • L3 tasks
  • Cleaning Efficiency Studies
  • Rotating Collimators RD
  • Tertiary Collimators Studies
  • Material Irradiation Studies

51
1.3.1 Cleaning Efficiency Studies
  • L3 Leader Angelika Drees (BNL)
  • FY06 budget 50 k
  • Goals
  • The ultimate goal of this sub program is to bench
    mark code(s), in particular SIXTRACKwColl, in a
    variety of aspects with RHIC beams.
  • We plan to install and implement at BNL
    accelerator tracking code identical with the one
    used at CERN (K2, SIXTRACK with Collimators, i.e.
    SIXTRACKwColl) and perform simulations of
    collimation efficiencies and loss maps which will
    then be compared to simulation results from
    earlier studies done at RHIC with other codes
    (Teapot, K2, ACCSIM) and with data. Various data
    sets at two energies are available.
  • During the RHIC proton run collimator setup
    procedures should be implemented into the RHIC
    control system and tested with beam under real
    operating conditions.

52
Cleaning Efficiency Studies Overall Plan
  • FY2006
  • debug the code
  • compare with other simulation and data, test
    setup procedures,
  • finish reports

53
1.3.2 Rotating Collimators
  • L3 Leader Tom Markiewicz (SLAC)
  • FY06 budget 720 k
  • Goals
  • The ultimate goal is a successful design for low
    impedance, high efficiency LHC secondary
    collimators. The design will be validated with a
    sufficient but small (1-3) number of prototypes
    and beam tests. The design specifications and
    the prototypes are the primary deliverables. The
    time scale is set by the desirability of testing
    the prototypes with LHC beam in 2008/09. Then,
    CERN will decide whether or not to proceed with
    the rotating collimator design. If a decision is
    made to proceed, this sub-project will provide an
    engineering drawing package to CERN and will
    support the effort to commission the collimators
    once they are manufactured and installed by CERN.

54
June 15-17 CERN/SLAC Collaboration Meeting
  • Attendees
  • CERN Ralph Assmann (Project Leader, Tracking),
    Allesandro Bertarelli (Mechanical Eng.), Markus
    Brugger (Radiation Issues), Mario Santana (FLUKA)
  • SLAC Tom Markiewicz, Eric Doyle (ME), Lew Keller
    (FLUKA), Yunhai Cai (Tracking), Tor Raubenheimer
  • Radiation Physics Group Alberto Fasso, Heinz
    Vincke
  • Results
  • Agreement on basic design of RC1 (1st rotatable
    prototype)
  • Transfer of many of CERN mechanical CAD files
  • Lists of
  • Further studies required
  • Outstanding Engineering Issues requiring more
    design work
  • Project Milestone List Action Items List
  • Test Installation of New FLUKA

55
Conceptual Design of RC1 (1 of 2)
  • Mechanics must fit within CERN Phase I C-C
    envelope
  • 224mm center-to-center with 88mm OD beampipes
  • 1480mm longitudinal flange-to-flange
  • 25mm adjustment/jaw (22.5mm relative to beam
    w/5mm allowed beam center motion
  • and use Phase I alignment and adjustment scheme
  • Two 75cm Cu cylindrical jaws with 10cm tapered
    ends, 95cm overall length with axes connected to
    vertical mover shafts
  • 136mm OD with 9mm taper
  • Each jaw end independently moved in 10um steps
  • Vacuum vessel sized to provide 8mm clearance to
    adjacent beam and allow gross/fine 0, 45, 90
    positions
  • Relaxed mechanical deformation specifications
  • lt25 um INTO beam guaranteed by adjustable
    mechanical stop(s)
  • Ride on groove deep enough to not be damaged in
    accident case
  • Adjustable between 5 and 15 sigma (2-6mm)
    centered on beam
  • lt325 um (750um) AWAY FROM beam _at_ 0.8E1p/s loss
    (4E11p/s)
  • Flexible support on adjustment

56
Proposed layout
136mm diameter x 950mm long jaws, vacuum
tank, jaw support mechanism and support base
derived from CERN Phase I
57
Adjustable gap-defining stop
  • Stop prevents gap closing as jaw bows inward due
    to heat
  • Jaw ends spring-loaded to the table assemby
    move outward in response to bowing
  • May use two stops to control tilt
  • Slot deep enough to avoid damage in accident
  • Stop far enough from beam to never be damaged
    is out of way at injection

58
RF Contact Overview
59
LHC Phase I 2D carbon-carbon Irradiation Specimen
at BNL BLIP Facility
117 MeV or 200 MeV BNL LiNAC Protons (depending
on the isotope production requirements downstream)
Preliminary Assessment 2D CC specimens normal to
the planes of reinforcing fibers and close to the
center of the beam (receiving high dose)
experienced degradation. Less degradation was
seen in the specimens along the reinforcement.
? NOTE Total dose received MUCH HIGHER than
what LHC collimator jaws will see. Status Phase
I Carbon-Carbon irradiation completed Sample
activation measurements completed Thermal
Expansion of specimens started PLANNING of FY06
Post-Irradiation and Follow-up Irradiation Studies
60
Phase-II LHC Collimator Material Irradiation
Planned for May 2006
  • Primary Materials
  • Annealed Copper and Glidcop (85 Cu 15 Al)
  • Other Potential Candidates Super Invar, Gum
    Metal,
  • Also
  • 2D Carbon-Carbon and 3D Carbon-Carbon

Test for physical properties (thermal
conductivity, thermal expansion) And Stress-Strain
(mechanical properties)
61
POST IRRADIATION ANALYSIS REVEALED THAT PHASE-I
2D Carbon-Carbon Self Anneals Irradiation Damage
through thermal cycling in both strong and weak
directions. Therefore, it is expected to meet the
25 micron condition set as goal
Annealing along strong (fiber plane) direction
Annealing along weak direction
Shown is annealing under different levels of
irradiation damage
62
PHASE-I Irradiation and Analysis of 2D
Carbon-Carbon at BNL GOALS Determine resilience
of 2D CC against irradiation damage and assess
how the critical property of thermal expansion
changes with irradiation
Beam exposure and irradiation damage assessment
assembly
Post-irradiation Analysis
irradiation
At irradiation levels several orders of
magnitude than what the LHC collimator jaws will
see the 2D CC suffers structurally from
irradiation exposure
63
Physics Long Range _at_ RHIC
SPS t d5 measured 11/09/04 Tevatron
t d3 measured in HEP stores, TEL RHIC
t d4 or d2 measured 04/28/05, scan 4
64
1.2 LHC Commissioning
  • L2 Leader Michael Syphers (FNAL)
  • FY06 budget 1,140 k
  • Goals
  • There is an overall benefit to the U.S.
    high-energy physics program if the LHC turns on
    rapidly and successfully. Our experimental
    physics groups have invested heavily in the LHC
    project, and the science produced there thus
    represents a return on the U.S. investment. A
    healthy and strong HEP activity at LHC will
    surely be necessary to secure future
    accelerator-based HEP projects in the U.S. The
    information gained during the commissioning will
    be available in a timely manner and will have
    maximum positive effect on U.S. plans for LHC
  • L3 tasks
  • Beam Commissioning
  • Hardware Commissioning
  • Toohig Fellowship
  • New Initiatives

65
Schottky Monitors Overall Plan
  • FY2006
  • S/N study of low intensity bunches in Tevatron
  • Design pick-up structure, study PLL DAB board for
    DAQ
  • complete an integration document, signed off by
    both parties, and entered into CERN EDMS
  • Design and build front-end electronics Q1
  • Joint LARP and CERN review of the proposed design
  • FY2007
  • Adapt Fermilab analysis software
  • Hardware commissioning at CERN without beam
  • FY2008
  • Hardware commissioning at CERN with beam
  • FY2009
  • Beam studies of chromaticity measurements, ramp
    effects
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